Bolster or other beam for car-trucks.



PATENTED JUNE l4, 1904.

S. A. CRONE. BOLSTER OR OTHER BEAM FOR GAR TRUCKS.

APPLICATION FILED NOV. 24, 1903.

N0 MODEL.

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INVENTOR .32; J1; (m/w ATTORNEY WITNESSES:

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UNITED STATES Patented June 14, 1904.

PATENT OFFICE.

SETH A. CRONE, OF NEW YORK, N. Y.

BOLSTER OR OTHER BEAM FOR CAR-TRUCKS.

SPECIFICATION'forming part of Letters Patent No. 762,286, dated June 14,1904.

I Application filed November 24., 1903. Serial No. 182,463. (No model.)

To all whom it may concern:

Be it known that I, SETH A. CRONE, a citizen of the United States, and aresident of New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Bolster or otherBeams for Car-Trucks, of which the following isa specification.

The invention relates to improvements in bolster and other beams forcar-trucks; and it consists in the novel features hereinafter describedand claimed.

My invention pertains more especially to a novel construction of trussedbeams embracing compression and tension members and a central strut, thebeam proper being in one integral bar of metal bent to the requiredoutline and secured at its ends to one end of the strut, the other endof the latter engaging the middle of the trussed portion of the beam;and the object of the invention is to provide beams of the characterreferred to of increased eificiency and durability, and at the same timeto avoid complications of parts, unnecessary weights, and the usualrivetingtogether of the parts commonly comprised in bolster and otherbeams.

The invention is especially applicable to truck-bolsters andbrake-beams; and the invention will be fully understood from thedetailed description hereinafter presented, reference beinghad to theaccompanying drawings, in which Figure 1 is a side elevation, partlybroken away and partly in section, of a truck-bolster constructed inaccordance with and embodying my invention. Fig. 2 is a top view ofsame. Fig. 3 is a vertical transverse section of same on the dotted line3 3 of Fig. 1. Fig. 4 is a like section of same on the dotted line 4 4:of Fig. 1, and Fig. 5 is a top view'of a brake-beam embodying myinvention.

In Figs l to 4, inclusive, I present the preferred form of the inventionwhen the same is embodied in a truck-bolster, and in said figuresdesignates the bolster-beam proper, and 11 the central strut, whoseupper surface affords a center bearing and is Vertically apertured toreceive the usual king-bolt. The bolster-beam 10 is formed from onecontinuous piece of rolled channel-beam bent to form the members 12 13and having its ends in abutting relation to the strut 11 and securelyriveted to the flanges 14, constituting a portion of said strut, asclearly illustrated. The members 12 13 define an outline of diamondshape, except at their end portions 15, where said members aresubstantially parallel with each other, so that they may appropriatelybe caused to engage the usual supports provided in car-trucksfor theends of bolsterbeams. The ends of the channel-beam engage the upperportion of the strut 11, and the lower portion of said strut engages theupper surfaces of the member 13 of the bolsterbeam and is theretosecured by means of bolts .16, as more clearly represented in Fig. 3.The strut 11 is in the form of a rectangular casting, and while this isa desirable form of construction. for the strut 11 it is obvious thatthe present invention is not limited to any special detailed form ofconstruction of said strut. The beam 10 is, as shown, in one integralpiece of metal, and one of the purposes of thus constructing the saidbeam 10 is to avoid the employment of rivets and bolts at the outer endsof said beam and to cause the strains exerted upon the compressionmember 12,to be resisted by the strut 11 and the outer ends of themember 13. If, for illustration, the members 12' 13 were in separatepieces riveted together at the end portions 15 of the beam, the strainsexerted upon the compression member 12 would have a tendency to severthe rivets securing said members together, thereby impairing the utilityof the bolster, and it is to prevent any such result that I form thebolster-beam in one integral piece of rolled metal bent into therequired shape and having its free ends secured adjacent to the verticalcenter of the bolster to the strut 11, which is intermediate thecompression and tension members 12 13 and secured to both thereof. InFig. 1 I illustrate the end portions 15 of the bolster as being formedby bringing the web portions of the members 12 13 close together; but itis not essential that these web portions should contact with each other,and they may be separated by a space greater than that illustrated inthe drawings, so that the channel-beam may not at the ends of thebolster be given the sharp bend illustrated, this being a detail broughtinto near relation to each other at the end portions of the completedbeam, as shown.

The brake-beam shown in Fig. 5 comprises a central strut 17 and beammembers 18 19, the said members being formed in one integral piece froma rolled channel-beam bent to the required form and having its two endsbrought into abutting relation with the head of the strut 17 andsecurely riveted to flanges 20, formed on said head in the manner aboveexplained with relation to the structure shown in Figs. 1, 2, and 3. Themembers 18 19 of the brake-beam are engaged at their inner facing sidesat their central portion by the strut 1'7, and the latter is of suitableform to receive the usual brake-lever. (Not shown.) The end portions ofthe members 18 19 are brought into close relation to each other, asdenoted at 21 21, for, in addition to other reasons, convenience inapplying the brake-heads (not shown) upon the ends of the brake-beam.

The bolster-beam and brake-beam correspond with each other in that eachis formed from one continuous rolled beam bent to shape and having itsopposing members at their central portions separated by acentral strutengaging both of said members. In forming the bolster-beam I prefer thatthe members 12 13 thereof shall have corresponding outlines and shallconverge toward the ends of the bolster, while in the construction ofthe brake-beam it is desirable that the member 18 thereof shall beslightly bowed and that the member 19 shall be given such form that itmay constitute a substantial truss and correspond in the general outlinewith the form of trussed rods at present employed in brakebeams.

I prefer that the beam employed in the construction of both the bolsterand brake-beam shall be of channel shape in cross-section; but I desirenot to limit my invention to the shape of the beam, since it is obviousthat many of the advantages of my invention may be attained if, forillustration, a portion of the flanges of the beam were removed, thusbreaking the continuity of the channel shape.

The bolster shown in Figs. 1 and 2 is a truck-bolster; but it is obviousthat the same bolster may be turned upside down and with slight changesin outline converted into a body bolster for a car.

What 1 claim as my invention, and desire to secure by Letters Patent, is

1. The beam hereinbefore described comprising the longitudinal opposingmembers and central strut, the said members being in one continuouspiece of rolled flanged metal beam bent to shape and having its ends inabutting relation to said strut and secured thereto, the latter havingits end intermediate said ends of said beam, and the flanges of saidbeam being turned outwardly; substantially as set forth.

2. The beam hereinbefore described comprising the longitudinal opposingmembers and central strut, the said members being in one continuouspiece of rolled flanged metal beam bent to shape and having its ends inabutting relation to said strut and secured thereto, the latter havingits end intermediate said ends of said beam and provided with theoutwardly-extending flanges upon which said ends are riveted, and theflanges of said beam being turned outwardly; substantially as set forth.

3. The beam hereinbefore described comprising the longitudinal opposingmembers and central strut, the said members being in one integral pieceof rolled flanged metal bent to shape and having its ends eachindependently secured to said strut, and said members at the endportions of the beam having their webs substantially parallel with andin near relation to each other, and the flanges of said beam beingturned outwardly; substantially as set forth.

Signed at New York, in the county of New York and State of New York,this 21st day of November, A. D. 1903.

SETH A. CRONE.

l/Vitnesses:

ARTHUR MARION, CHAS. C. GILL.

